linux-kernel - [PATCH 4.10 10/24] mmc: dw_mmc: silent verbose log when calling from PM context

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Date:   Tue, 25 Apr 2017 16:09:19 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Shawn Lin <shawn.lin@...k-chips.com>,
        Jaehoon Chung <jh80.chung@...sung.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Alexander Kochetkov <al.kochet@...il.com>
Subject: [PATCH 4.10 10/24] mmc: dw_mmc: silent verbose log when calling from PM context

4.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Shawn Lin <shawn.lin@...k-chips.com>

commit ce69e2fea093b7fa3991c87849c4955cd47796c9 upstream.

When deploying runtime PM, it's quite verbose to print the
log of ios setting. Also it's useless to print it from system
PM as it should be the same with booting time. We also have
sysfs to get all these information from ios attribute, so let's
skip this print from PM context.

Signed-off-by: Shawn Lin <shawn.lin@...k-chips.com>
Signed-off-by: Jaehoon Chung <jh80.chung@...sung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
Cc: Alexander Kochetkov <al.kochet@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/mmc/host/dw_mmc.c |   12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -1179,11 +1179,13 @@ static void dw_mci_setup_bus(struct dw_m
 		if ((clock != slot->__clk_old &&
 			!test_bit(DW_MMC_CARD_NEEDS_POLL, &slot->flags)) ||
 			force_clkinit) {
-			dev_info(&slot->mmc->class_dev,
-				 "Bus speed (slot %d) = %dHz (slot req %dHz, actual %dHZ div = %d)\n",
-				 slot->id, host->bus_hz, clock,
-				 div ? ((host->bus_hz / div) >> 1) :
-				 host->bus_hz, div);
+			/* Silent the verbose log if calling from PM context */
+			if (!force_clkinit)
+				dev_info(&slot->mmc->class_dev,
+					 "Bus speed (slot %d) = %dHz (slot req %dHz, actual %dHZ div = %d)\n",
+					 slot->id, host->bus_hz, clock,
+					 div ? ((host->bus_hz / div) >> 1) :
+					 host->bus_hz, div);
 
 			/*
 			 * If card is polling, display the message only